C6 engine noise
Thread Starter
Instructor
Joined: Oct 2011
Posts: 100
Likes: 0
From: Socal
C6 engine noise
Hello I know this is my first post. I have used the search function and found some info on what I am going to ask so please do not hammer me too much if this has been covered many times before.
First of all I have owned 6 corvettes and 1 Dodge Viper. I love Vettes and plan on having one the rest of my life.
I have a 2007 C6 Corvette 6.0 LS2 engine with a 6 speed manual transmission. I have 110K on the car and I drive it about 90 miles a day.
Recently I had a clutch put in it by a corvette performance shop in California and they did a great job. Now I have two problems which started about 2 weeks after the clutch was put in.
1) I got an engine light code which said the right bank catalytic converter is working below threshold efficency.
2) I have a sound which sounds like a slight exhaust leak or lifter noise. It kinda sounds like a sewing machine and the noise changes with engine being under pressure. It kinda had this noise just a little bit before the clutch job but it has gotten worse over time but not real loud yet.
I had a shop check for an exhaust leak but no one could find one. I am more worried about the slight tapping noise as I drive the car alot. Any ideas. Can the valves be adjusted on a LS2???
Thanks for input on this.
First of all I have owned 6 corvettes and 1 Dodge Viper. I love Vettes and plan on having one the rest of my life.
I have a 2007 C6 Corvette 6.0 LS2 engine with a 6 speed manual transmission. I have 110K on the car and I drive it about 90 miles a day.
Recently I had a clutch put in it by a corvette performance shop in California and they did a great job. Now I have two problems which started about 2 weeks after the clutch was put in.
1) I got an engine light code which said the right bank catalytic converter is working below threshold efficency.
2) I have a sound which sounds like a slight exhaust leak or lifter noise. It kinda sounds like a sewing machine and the noise changes with engine being under pressure. It kinda had this noise just a little bit before the clutch job but it has gotten worse over time but not real loud yet.
I had a shop check for an exhaust leak but no one could find one. I am more worried about the slight tapping noise as I drive the car alot. Any ideas. Can the valves be adjusted on a LS2???
Thanks for input on this.
Tech Contributor
Joined: Dec 2006
Posts: 10,962
Likes: 29
From: Van Buren Arkansas
Wounded Warrior Escort '11
You need to pull the codes. I'm thinking one of the O2 sensors isn't working or possibly they reversed the wires. Its a common issue on the C-5's for them to get reversed and I truly don't know if its possible to reverse them on a C-6 or not. Since the DIC won't pull codes like the C-5, you will need a CAN code reader.
Thread Starter
Instructor
Joined: Oct 2011
Posts: 100
Likes: 0
From: Socal
Thanks for the information from everyone. I will try the O2 sensor regarding the code.
Mr. Blue I have the same vette as you. I checked out your photos and the only visible difference is a blacked out my windows and rims. Also there are some nice cars in the photos, the elise, and Porsche?
I will have my vette in the shop this week and I will have them check out the suggestions given, thanks
Mr. Blue I have the same vette as you. I checked out your photos and the only visible difference is a blacked out my windows and rims. Also there are some nice cars in the photos, the elise, and Porsche?
I will have my vette in the shop this week and I will have them check out the suggestions given, thanks
